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UCD90124RGCT Datasheet(PDF) 1 Page - Texas Instruments |
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UCD90124RGCT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 44 page Vmarg Closed Loop Margining UCD90124 VMON GPIO 12V GPIO 3.3V OUT VMON 1.8V OUT 3.3V_UCD 0.8V OUT I0.8V TEMP0.8V VMON VMON VMON VMON I12V TEMP12V VMON VMON INA196 12V 12V OUT 3.3V OUT 12V OUT 1.8V OUT GPIO GPIO 0.8V OUT PWM 2MHz INA196 I0.8V WDI from main processor GPIO WDO GPIO /MR VMON TEMP IC TEMP0.8V TEMP IC TEMP12V POWER_GOOD GPIO WARN_OC_0.8V_ OR_12V GPIO SYSTEM RESET GPIO OTHER SEQUENCER DONE (CASCADE INPUT) GPIO I2C/ PMBUS JTAG /EN DC-DC 1 VOUT VFB VIN /EN LDO1 VOUT VIN /EN DC-DC 2 VOUT VFB VIN V 4- wire Fan 12 V 4- DC Fan PWM GPIO Fan Tach 25 kHz Fan PWM 12V TACH PWM GND 5.1V UCD90124 www.ti.com SLVSA29A – NOVEMBER 2009 – REVISED DECEMBER 2009 12-Rail Sequencer and System Health Monitor With Fan Control Check for Samples :UCD90124 1 FEATURES DESCRIPTION 2 • Monitor and Sequence 12 Voltage Rails – All Rails Sampled Every 400 μs The UCD90124 is a 12-rail PMBus/I2C addressable power-supply sequencer and system-health – 12-bit ADC With 2.5-V, 0.5% Internal VREF monitor. The device integrates a 12-bit ADC for – Sequence Based on Time, Rail and Pin monitoring up to 13 power-supply voltage, current, or Dependencies temperature inputs. Twenty-six GPIO pins can be – Four Programmable Undervoltage and used for power supply enables, power-on reset signals, external interrupts, cascading, or other Overvoltage Thresholds per Monitor system functions. Twelve of these pins offer PWM • Fan Control and Monitoring functionality. Using these pins, the UCD90124 offers – Supports Four Fans With Five User-Defined support for fan control, margining, and Speed-vs-Temperature Setpoints general-purpose PWM functions. – Supports Two-, Three-, and Four-Wire Fans Fan-control signals can be sent using PMBus • Nonvolatile Error and Peak-Value Logging per commands or generated from one of two built-in Monitor (up to 12 Faults) fan-control algorithms. PWM outputs combined with temperature and fan-speed measurements provide a • Closed-Loop Margining for 10 Rails complete fan-control solution for up to four – Margin Output Adjusts Rail Voltage to independent fans. Match User-Defined Margin Thresholds The TI Fusion Digital Power™ designer software is • Programmable Watchdog Timer and System provided for device configuration. This PC-based Reset graphical user interface (GUI) offers an intuitive • Flexible Digital I/O Configuration interface for configuring, storing, and monitoring all system operating parameters. • Multiphase PWM Clock Generator – Clock Frequencies From 15.259 kHz to 125 MHz – Capability to Configure Independent Clock Outputs for Synchronizing Switch-Mode Power Supplies • Internal Temperature Sensor • JTAG and I2C/SMBus/ PMBus™ Interfaces APPLICATIONS • Industrial / ATE • Telecommunications and Networking Equipment • Servers and Storage Systems • Embedded Computing • Any System Requiring Sequencing and Monitoring of Multiple Power Rails 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PMBus, Fusion Digital Power are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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